Defecator.



M. B. GRESSWELL.

DEFEOATOR.

APPLICATION FILED NOV. 25, 1911.

Patented 001;. 14, 1913.

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COLUMBIA PLANOGRAPH c0., WASHINGTON. n. c,

M. B. GRESSWELL.

DEFEGATOR.

APPLICATION FILED NOV. 25, 1911. 1 ?5 629 I Patented Oct. 14, 1913.

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M. GRBSSWELL.

DEFECATOR.

APPLICATION TILED NOV. 25, 1911.

Patented Oct. 14, 1913.

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UNITED TATFQ PATENT MILTON B, CRESSW'ELL, 0F DES MOINES, IOWA.

DEFECATOR.

Application filed November 25, 1911.

To all whom it may concern:

Be it known that I, MILTON B. Cmiss- WELL, a citizen of the United States of America, and resident of Des Moines, Polk county, Iowa, have invented a new and useful Defecator, of which the following is a specification.

The object of this invention is to provide an improved construction for defecators for refining syrups.

A further object of this invention is to obviate the use of clay and infusorial earth in the process of clarifying sorghum juice, and other saccharine substances.

A further object of this invention is to provide improved means for removing the scum from sorghum juice during the operation of boiling.

A further object of this invention is to provide improved means for initiating the process of clarifying juice in a single treatment without the use of lime or other foreign elements.

My invention consists in the construction, arrangement and combination of elements hereinafter set forth, pointed out in my claims and illustrated by the accompanying drawing, in which- Figure 1 is a plan of the apparatus. Fig. 2 is a side elevation of the same on a reduced scale, illustrating also a finisher used in connection therewith. Fig. 3 is an end elevation of the apparatus removed from its support. Fig. 4: is a vertical section on the line 4-4 of Fig. 1. Fig. 5 is a vertical section on the line 5-5 of Fig. 1. Fig. 6 is a vertical sect-ion similar to Fig. 4 showing the addition of certain automatic skimming devices.

In the construction of the apparatus as shown the numeral 10 designates a frame or trestle which may be of any desired construction and height and preferably is employed to support the defecating devices and other devices used in connection therewith. I have here illustrated the defecating devices in duplicate, as it is convenient to be able to use one set of devices while the other is being emptied, cleaned, and refilled, but it is to be understood that such devices are to be used entirely independently of each other. An open tank or pan 11 is carried Specification of Letters Patent.

Patented @ct. 14,1913.

Serial No. 662,440.

by legs 12 at the desired elevation above the frame 10 and preferably bolted thereto. The tank 11 is divided lengthwise by a par tition 13, into a boiling compartment and a dead-chamber. The partition 13 is provided with a relatively large opening 14: near one end and materially spaced from the bottom of the tank, forming a dead liquid space for catching heavy particles.

Means is provided for applying heat to the boiling compartment of the tank 11, and I prefer to use for this purpose a steam pipe 15 leading from a suitable source of steam supply. The steam pipe 15 enters the forward end of the boiling compartment and is arranged in the form of a coil covering the bottom of said compartment for one-half to two-thirds of its length. Thence the steam pipe 15 proceeos along the wall of the boiling compartment opposite to the dead-chamber of the tank 11 and thence upwardly and out through the to of the tank 11 to a point of exhaust to the atmosphere. The steam pipe 15 is provided with a cut-off valve 16 before it enters the tank 11 and with a valve 17 at the rearend of said tank. A sediment pocket 18 is formed in the bottom of the boiling chamber near the rear end thereof and in a portion not occupied by the coil of the pipe 15. An outlet pipe 19 leads from the bottom of the boiling compartment near the forward end thereof, and said pipe is closable by means of a valve 20. An auxiliary steam pipe 21 branches off from the steam pipe 15 at the rear end portion of the boiling compartment and leads downwardly and forwardly therefrom over the steam coil and adjacent the wall of the tank opposite to the dead-chamber. The auxiliary pipe 21 turns at right angles to form an arm 21 traversing the forward end of the boiling compartment, and the free end of said arm is closed by a cap 22. The arm 21" is formed with a series of jet openings 23 directed forwardly and slightly upwardly into the boiling compartment above the steam coil therein. A valve 2% is provided for the auxiliary pipe 21 adjacent its connection with the pipe 15. When the defecating devices are duplicated as shown it is convenient to arrange the boiling compartments thereof side by side as indicated in Fig. 1. A baffle plate 25 extends transversely of the forward end portion of the dead-chamber of the tank 11 and is inclined upwardly from the bottom toward the top of said forward end, preferably rising to an elevation above the normal juice line in the tank. A drain pipe 26 leads from the bottom of the tank beneath the baflie plate 25.

In the practical use of the apparatus juice to be defecated is introduced to the tank in any desired manner, as by pouring or piping. Steam is admitted to the pipe 15 and coil by opening the valve 16. At the beginning of the operation the valve 24 is opened and steam is allowed to enter the auxiliary pipe 21 from the pipe 15. A portion of such steam escapes through the jet openings 23 into the boiling compartment and causes an agitation of the juice therein, and starts a current of uice toward the rear of said boiling compartment. The escaping steam also has the efiect of cutting the gum contained in the raw juice, which causes better separation of impurities. 1n the meantime the temperature of the coiled pipe 15 rises and creates a boiling of the juice in the boiling compartment, and continues and increases the agitation of such juice and the current toward the rear portion of such compartment. in the boiling compartment the valve 24: is closed and the auxiliary pipe 21 is not utilized during the remainder of the operation. As above indicated, it is the tendency of the heated coils to throw juice rearward in the boiling compartment, and inasmuch as the straight portion of the pipe 15 continues along the wall of said compartment opposite to the opening 14, the current is directed through said opening and into the deadchamber. As the juice passes along the rear portion of the boiling compartment the heavier particles of impurity carried thereby will sink and be received within the sediment pocket 18, and some of them will be deposited on the bottom of the dead-chain.- ber, whence they may be removed after the completion of the operation. The current of juice continues toward the forward portion of the dead-chamber, in which there is only such slight agitation as is communicated from the boiling chamber. The juice then encounters the bafiie plate 25 and the scum thereon may be removed by a paddle in the hands of an operator, who scrapes it over the bafie plate. The scum drops and passes off through the drain 26. Experiment has demonstrated that after encountering the baflie plate the juice returns along the bottom of the dead-chamber as an under- 7 current, depositing heavy matter on the bot- After the current has been initiated 1 1, then forwardly through the boiling chamber, after which the operation continues until deemed to be complete. is then closed. The defecated juice may then be drawn off through the pipe 19, which leads to a finishing tank 27, shown and described in my companion application pending concurrently herewith. I prefer to pro vide a small port 28 in the wall 13 at a lower elevation than the opening 1 1 so that in drawing ofi the juice from the tank there will be no disturbing current and a minimum portion of juice will be retained in the dead-chamber, which juice is intermingled with sediment. The steam pipes 15 leading to the duplicate tanks 11 may be branches of a common pipe controlled by a valve 29.

In the construction shown in Fig. 6 the baffle plate 25 is foreshortened and drums 30, 31 are journaled for rotation in and transversely of the forward end of the deadchamber above said baffle plate. An endless carrier 32 is mounted on the drums 30, 31 and the upper portion thereof forms a continuation of the bafiie plate 25 and receives scum therefrom and carries it forwardly and upwardly. A scraper 33 is fixed in inclined position to the forward end portion of the wall of the dead-chamber and extends into close proximity to the forward upper portion of the endless carrier 32. It is the function of the scraper 33 to remove scum from the carrier 32 and cause it to drop into the space behind the baffle plate. The carrier 32 may be driven by means of a pulley 34 fixed to the axle of one of the drums and belted to a prime mover not shown.

The use of my improved apparatus does away with the necessity of using clay or infusorial earth, lime or hand skimming to remove particles of impurities from raw syrup, and removes said impurities to an extent impossible to attain by means of the processes and devices now in common use.

1 claim as my invention- 1. A defecator, comprising a tank, a partition dividing said tank into a boiling co-mpartment and a dead-chamber, an opening in said partition, an inclined baflie plate at the forward end of said dead-chamber, a steam coil in the forward portion of said boiling chamber, and a valve-controlled steam pipe leading from said coil along one wall of said boiling compartment and opposite to the opening in said partition and formed with rearwardly directed jet openings.

2. A defecator, comprising a tank, a partition dividing said tank into a boiling compartment and a dead-chamber, an opening in said partition, a steam coil in the forward, portion of said boiling compartment, a steam pipe leading from said coil along one wall of said tank and opposite to the open- The valve 16 p ing in said partition, and an auxiliary steam Signed by me at Des Moines Iowa this pipe leading forwardly Within said boiling eighteenth day of November, 1911.

compartment above the first steam pipe said 7 auxiliary pipe formed With a transverse arm MILTON CRESS at the forward end of the tank, said arm be- Witnesses:

ing formed with jet openings directed rear- ERLE W. MILLER, wardly across said steam coil. EARL M. SINCLAIR.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

